diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-03 10:39:02 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-03 10:39:02 -0700 |
commit | 7e31aa11fc672bbe0dd0da59513c9efe3809ced7 (patch) | |
tree | 0aafe6a0045230950ce6b26579a053da12614a49 /arch/arm/include/asm/mach/dma.h | |
parent | 071f4924844c435a3ae0cdbab7d7df2f1da85713 (diff) | |
parent | 9cb7117fa4858468014f76bd996076985111e955 (diff) |
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] 5182/1: pxa: Fix pcm990 compilation
[ARM] Fix explicit asm(-arm)?/arch-foo references
[ARM] move include/asm-arm to arch/arm/include/asm
[ARM] Remove explicit dependency for misc.o from compressed/Makefile
[ARM] initrd: claim initrd memory exclusively
[ARM] pxa: add support for L2 outer cache on XScale3 (attempt 2)
[ARM] 5180/1: at91: Fix at91_nand -> atmel_nand rename fallout
[ARM] add Sascha Hauer as Freescale i.MX Maintainer
[ARM] i.MX: add missing clock functions exports
[ARM] i.MX: remove set_imx_fb_info() export
[ARM] mx1ads: make mmc platform data available for modules
[ARM] mx2: add missing Kconfig dependency
Diffstat (limited to 'arch/arm/include/asm/mach/dma.h')
-rw-r--r-- | arch/arm/include/asm/mach/dma.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/arch/arm/include/asm/mach/dma.h b/arch/arm/include/asm/mach/dma.h new file mode 100644 index 00000000000..fc7278ea714 --- /dev/null +++ b/arch/arm/include/asm/mach/dma.h @@ -0,0 +1,57 @@ +/* + * arch/arm/include/asm/mach/dma.h + * + * Copyright (C) 1998-2000 Russell King + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This header file describes the interface between the generic DMA handler + * (dma.c) and the architecture-specific DMA backends (dma-*.c) + */ + +struct dma_struct; +typedef struct dma_struct dma_t; + +struct dma_ops { + int (*request)(dmach_t, dma_t *); /* optional */ + void (*free)(dmach_t, dma_t *); /* optional */ + void (*enable)(dmach_t, dma_t *); /* mandatory */ + void (*disable)(dmach_t, dma_t *); /* mandatory */ + int (*residue)(dmach_t, dma_t *); /* optional */ + int (*setspeed)(dmach_t, dma_t *, int); /* optional */ + char *type; +}; + +struct dma_struct { + void *addr; /* single DMA address */ + unsigned long count; /* single DMA size */ + struct scatterlist buf; /* single DMA */ + int sgcount; /* number of DMA SG */ + struct scatterlist *sg; /* DMA Scatter-Gather List */ + + unsigned int active:1; /* Transfer active */ + unsigned int invalid:1; /* Address/Count changed */ + + dmamode_t dma_mode; /* DMA mode */ + int speed; /* DMA speed */ + + unsigned int lock; /* Device is allocated */ + const char *device_id; /* Device name */ + + unsigned int dma_base; /* Controller base address */ + int dma_irq; /* Controller IRQ */ + struct scatterlist cur_sg; /* Current controller buffer */ + unsigned int state; + + struct dma_ops *d_ops; +}; + +/* Prototype: void arch_dma_init(dma) + * Purpose : Initialise architecture specific DMA + * Params : dma - pointer to array of DMA structures + */ +extern void arch_dma_init(dma_t *dma); + +extern void isa_init_dma(dma_t *dma); |